Introduction
With the influence of the global greenhouse effect, the summers in many countries are very hot. Especially in some cities in Africa close to the desert, the temperature is even hotter.
In this case, some people will wonder: Will high temperature damage Écrans LED? Don’t worry, this article will give a detailed answer to this question, let’s take a look.
Table des matières
1. What is considered a high temperature for LED display screens?
Generally speaking, when the operating temperature of an LED display screen exceeds its design specifications or the upper limit of its normal working range, it can be regarded as a high-temperature environment.
According to publicly released information and industry standards, the operating environment temperature range of LED display screens is usually set to -20℃ to 45℃.
This range is determined based on the material properties and thermal design of LED lamp beads, drive circuits, and the overall structure of the display screen and is intended to ensure that the display screen can work stably and reliably under most conventional environmental conditions.
Pour affichage LED extérieur screens, because they need to face more severe natural environments, their normal operating temperature range may be expanded. Some information mentions that the design operating temperature range of outdoor LED display screens may reach -20℃ to 55℃.
This is because outdoor displays usually use more durable materials and more advanced heat dissipation designs to adapt to harsh conditions such as high temperature, strong light, wind and rain.
However, it is worth noting that even if the design operating temperature range of outdoor LED displays is wide, long-term exposure to or exceeding its upper-temperature limit (such as 55°C) may still have an adverse effect on the display.
The high temperature will accelerate the light decay of LED lamp beads, resulting in reduced brightness and colour shift.
At the same time, high temperature will also cause the performance of electronic components in the display to decline or even damage, thereby affecting the overall stability and service life of the display.
In addition, extremely high temperatures above 55°C are relatively rare in actual applications, but in certain specific environments (such as desert areas, high-temperature workshops, etc.), LED displays may face such high-temperature challenges.
Therefore, when selecting and using LED displays, users should fully consider their actual working environment temperature and take necessary heat dissipation measures (such as installing cooling fans, using heat sinks, etc.) to ensure that the display can work stably and reliably in high-temperature environments.
At the same time, for LED displays that have been in high-temperature environments for a long time, users should also perform regular maintenance and inspections to promptly discover and deal with potential problems.
2. Direct impact of high temperature on the LED screen
High temperature, this invisible “killer”, is a big threat to LED display screens. It quietly affects the brightness, colour and life of the display screen. Let’s take a look at what’s going on.
Le luminosité of LED lamp beads is inextricably linked to temperature. When the temperature is high, the electrons and holes in the lamp beads are like being exhausted by the heat, and the recombination is not so smooth.
In this way, the luminous efficiency is greatly reduced, and the brightness naturally decreases. Don’t say that every little increase in temperature may reduce the brightness by a lot.
If you stay in a high-temperature environment for a long time, the luminous flux of the lamp beads will gradually decrease, just like the vision of people getting older. Finally, the display screen becomes darker and darker, and it is hard to see clearly.
This is not just as simple as affecting the viewing effect but also shortening the life of the display screen.
High temperature not only makes LED lamp beads dim but also inaccurate in colour. Did you know? The light emitted by LED lamp beads has a fixed wavelength, just like each of us has our own ID number.
However, once it encounters high temperature, this wavelength may become “erratic”. In this way, the color on the display will deviate. For example, red may become orange-red, and blue may become purple-blue.
In addition, high temperature will also change the colour temperature of the display, making it look completely different from the original. This colour shift is like putting a pair of coloured glasses on display, which makes people look very uncomfortable.
High temperature has a fatal blow to the life of LED display screens. The delicate materials and electronic components in the display screen become very “fragile” when they encounter high temperatures.
The packaging material may turn yellow and brittle and lose its original light transmittance and stability; the driver chip and control circuit may “strike” due to overheating, causing the display screen to fail to work properly.
In addition, high temperatures will accelerate the light decay process of LED lamp beads, making them dim in a short time. In this way, the life of the display screen is greatly shortened. It can be used for several years, but it may be scrapped in one or two years.
So, you have to take good care of the LED display and don’t let it stay in a high-temperature environment for a long time.
Otherwise, it will “strike” for you! Installing heat dissipation equipment and regular maintenance and inspection are essential measures!
3. Common usage scenarios and challenges in high-temperature environments
When it comes to LED displays, the first thing that comes to mind is those colourful pictures, but do you know? In a high-temperature environment, these “bright and beautiful” guys face many challenges!
1). Panneaux d'affichage extérieurs:
Outdoor billboards are the “big stars” in the city, and they are exposed to the sun every day. However, this high-temperature exposure is not a joke, and it is a big test for LED displays.
First of all, the brightness problem comes. Think about it, in the summer, the sun is so strong, and the long-term exposure will make the LED lamp beads look a bit “backward” even if they try hard to emit light.
If the brightness is not enough, the advertising effect will naturally be greatly reduced.
Let’s talk about colour. When the long-term high temperature comes, the colour of the LED lamp beads begins to be “wrong”. The original red colour turned orange-red, and the blue turned purple-blue.
Once the color is biased, the advertisement will look weird and the brand image will be affected.
In addition, high temperatures will accelerate the ageing of LED display screens. Just like people, if they are exposed to the sun every day, their skin will definitely age.
The same is true for LED display screens. If they are exposed to high temperatures for a long time, the components inside will easily have problems, and their service life will be shortened.
The most troublesome problem is the heat dissipation problem. Outdoor billboards are so large that the heat dissipation area is limited, and it is not easy to install complex heat dissipation equipment.
They can only rely on natural wind to blow, and sometimes I am really worried that it will “not be able to bear the heat”.
2). Indoor organiser performances:
Indoor stage performances are a lively place. The lights are shining and the audience is enthusiastic, but this is not a good thing for LED background screens.
The stage lights are so bright that they make the LED screen “hot”. These lights are like small stoves, which make the screen temperature rise sharply.
Designers have to find a way to prevent the light from shining directly on the screen, and they have to install efficient heat dissipation equipment on the screen, otherwise they are really afraid that it will “burn out”.
The audience is also a big heat source. So many people are crowded together, and the heat emitted is quite a lot. When the temperature on the stage is high, the LED screen will be even more uncomfortable.
Therefore, the performance venue must turn on the air conditioner to cool down the audience and give the LED screen a “resting space”.
The stage space is limited, and there is a lot of equipment, so there is really not much heat dissipation space left for the LED screen. Designers have to rack their brains to come up with a compact and efficient heat dissipation structure so that the screen can “survive in the cracks”.
During the performance, the LED screen cannot go wrong. Flickering screens, flower screens, etc., are all taboos. Therefore, when choosing LED lamp beads and display components, you must be particularly careful and choose good quality to ensure smooth performance.
3). Industrial control room:
The LED monitoring screen in the industrial control room is an “all-round player”. It has to monitor the production process and ensure the safety of the equipment. However, the industrial environment is not so friendly. High temperature, dust, vibration, everything comes to test it.
When the high temperature comes, the brightness and contrast of the LED monitoring screen begin to decrease.
The picture becomes blurry and looks particularly strenuous. We must find a way to replace high-temperature resistant LED lamp beads and display components so that the screen can be “bright” even at high temperatures.
High temperature will also accelerate the aging of components inside the screen. This is just like when people get old, their bodies are not as good as before. The same is true for the screen.
After using it for a long time, various problems will begin to occur. Therefore, the screen must be maintained and inspected regularly, and aging components must be replaced in time to keep the screen “eternally young”.
There is a lot of dust in the industrial environment, and these dusts are like “little demons” that drill into the screen. They attach to the surface of the screen or enter the inside of the screen, affecting the display effect and may also damage the components.
Therefore, the screen must be equipped with a dust cover, and the dust must be cleaned regularly to keep it clean.
Vibration is also a big problem. When industrial equipment is running, it will generate a lot of vibration.
These vibrations may loosen or damage the components inside the screen, affecting the stability of the screen. Therefore, the screen must be equipped with an anti-vibration device to make it stable and not affected by vibration.
In general, the Application of LED display screens in high temperature environments is really not easy. They have to face various challenges in order to “stay on the job.”
4. How to identify signs of overheating of LED screens
LED screens, as a common display device in our daily life, are actually “delicate” guys, especially in high-temperature environments; they may “have a fever” if you are not careful.
So, how do you judge whether the LED screen is overheated? Below, I will talk to you in detail about several identification methods.
Image quality deteriorates, and the eyes are the best detectors
1.1). Observe image stability
Have you ever encountered such a situation: looking at the LED screen, the picture suddenly flashes or shakes like a wave? This is actually the LED screen “shouting hot”! Under normal circumstances, the picture of the LED screen should be stable, without any flickering or shaking.
If you find that the picture is always flashing or shaking constantly, then you have to pay attention; it may be that the LED screen is too hot. You can try to adjust the parameters, such as brightness and contrast, to see if it can be improved. If the adjustment does not work, it is likely that the problem is overheating.
1.2). Check colour accuracy
Colour is also a good way to determine whether the LED screen is overheated. Think about it: if the LED screen is “overheated”, the colours it displays will definitely be different from usual.
For example, red may become redder, green may become greener, or the whole picture may look weird.
At this time, you can find a familiar picture, such as a movie poster or a landscape photo, and carefully compare the colour to see if there is any change. If you find that the colour is wrong, you have to quickly “cool down” the LED screen.
1.3). Observe the clarity of the image
Another detail is to see if the picture is clear. If the LED screen is overheated, the picture it displays may become blurry, just like a myopic person without glasses.
You can find a picture with text or patterns and carefully check whether the edges are clear and whether the details are still there. If you find that the picture is blurry, you have to deal with it quickly.
2). Ears and nose can also help judge
2.1). Auditory judgment
Did you know? When the LED screen is “overheated”, it may make a sound! This sound may be buzzing or hissing. In short, it is different from usual.
If you hear this strange sound when you are using the LED screen, you must stop and listen carefully to see if it comes from the LED screen. If it does, you must quickly “cool it down”.
2.2). Olfactory judgment
The nose can also help determine whether the LED screen is overheated! If the components inside the LED screen are burnt or melted due to overheating, it will emit a pungent smell.
This smell is like the smell of burning plastic or burning wires, and you can tell something is wrong as soon as you smell it.
If you suddenly smell this smell when you are using the LED screen, you must quickly cut off the power supply, stay away from the scene, and then find a professional to repair it.
3). System response is also the basis for judgment
3.1). System error
The control system of the LED screen is actually very smart. It has a temperature monitoring function. If the temperature is too high, the system will report an error and display some error codes or warning messages.
Therefore, when you use the LED screen, you must pay attention to whether there is any abnormal information or words indicating that the temperature is too high on the screen.
If so, you must quickly take measures to reduce the temperature. You can also check the manual or contact the manufacturer’s technical support to find out the meaning of the error code and how to solve it.
3.2). Automatic shutdown
Sometimes, the LED screen “runs too hot,” and the control system may shut it down automatically. This is actually to protect the components inside from being burned out.
If you find that the LED screen suddenly stops responding and cannot be turned on no matter how you press it, and it has not been touched before, it may be automatically shut down due to overheating. At this time, you have to wait for a while for the LED screen to cool down and then try to turn it on again.
If it still cannot be turned on, or it automatically shuts down soon after it is turned on, you have to find a professional to repair it.
In general, it is not difficult to identify signs of overheating of the LED screen.
As long as you pay more attention to the picture quality, listen for any strange sounds, smell for any pungent odours, and check whether the system reports errors or automatically shuts down, you can promptly discover and deal with the overheating of the LED screen.
Once you find that the LED screen is “running a fever”, you have to “cool it down” quickly! Otherwise, it may cause permanent damage to it!
5. Measures to prevent high temperatures from damaging the LED screen
1.1). Avoid direct sunlight:
Direct sunlight is one of the main reasons for the increase in temperature of the LED screen.
Therefore, when installing the LED screen, you should try to choose a location that avoids direct sunlight, such as installing it in a place with sunshade facilities, or choose a direction that is not easily exposed to direct sunlight.
1.2). Well-ventilated installation location:
Good ventilation conditions help to dissipate heat and reduce the operating temperature of the LED screen.
Therefore, when installing, ensure that there is enough space around the LED screen for air circulation. At the same time, you can also consider setting up exhaust vents or fans near the installation location to enhance the ventilation effect.
2.1). The importance of an effective heat dissipation system:
For LED screens, an effective heat dissipation system is essential. The heat dissipation system can quickly dissipate the heat generated by the LED screen and keep its operating temperature within the normal range.
Therefore, when designing the LED screen, the design and configuration of the heat dissipation system should be fully considered.
2.2). Applications of fans, heat sinks, and air conditioners:
Fans and heat sinks are common heat dissipation components that can effectively remove heat from the LED screen.
During installation, ensure that the fan and heat sink are in close contact with the LED screen to improve heat dissipation efficiency. At the same time, the working status of the fan and heat sink should be checked regularly to ensure their normal operation.
However, if the weather is too hot, fans and heat sinks will not be very effective, so an air conditioner should be installed.
3.1). Clean dust regularly:
Dust is the “enemy” of heat dissipation. It will adhere to the heat dissipation components and hinder the dissipation of heat.
Therefore, the LED screen should be cleaned regularly, especially the heat dissipation system part, to ensure that it is clean and dust-free.
3.2). Check whether the heat dissipation components are working properly:
In addition to cleaning dust, the working status of the heat dissipation components should also be checked regularly.
For example, check whether the fan rotates normally, whether the heat sink is deformed or damaged, etc. Once an abnormality is found, it should be repaired or replaced in time.
In summary, the measures to prevent high temperature damage to the LED screen mainly include the reasonable selection of installation location, the design of an effective heat dissipation system, and regular inspection and maintenance.
Through the implementation of these measures, the operating temperature of the LED screen can be effectively reduced, its service life can be extended, and its stable and reliable operation can be ensured.
6. High-temperature emergency treatment plan
In a high-temperature environment, LED screens may face a series of problems due to overheating, which not only affects the display effect but may also cause permanent damage to the equipment.
In order to ensure the normal operation of the LED screen and extend its service life, the following is a detailed set of high-temperature emergency treatment plans:
1). Cool down immediately
1.1). When signs of overheating are found:
Closely monitor the working status of the LED screen. Once signs of overheating, such as image flickering, colour distortion, abnormal brightness, system error, automatic shutdown or abnormal sound, are found, take immediate action.
1.2). Rapid cooling measures:
- Environmental cooling:
If conditions permit, turn on the air conditioner or fan to reduce the indoor temperature and create a cooler working environment for the LED screen.
Reduce load: Reduce the brightness of the LED screen, turn off unnecessary dynamic effects or background images, reduce its workload, and thus reduce heat generation.
- Physical heat dissipation:
Use physical heat dissipation equipment such as heat sinks and fans to accelerate the heat dissipation on the surface of the LED screen. If the LED screen itself is equipped with a heat dissipation system, ensure that it works properly, and manually clean the dust or adjust the fan speed if necessary.
- Temporary shading:
If the LED screen is installed outdoors or in a place that is susceptible to direct sunlight, temporary shading measures such as sunshade cloth and sun visors can be used to reduce the heat caused by direct sunlight.
2). Professional maintenance
2.1). Severe overheating or damage:
If the LED screen is severely damaged due to overheating, such as screen cracking, component burning, circuit short circuit, etc., or the temperature cannot be reduced by simple measures, professional maintenance services should be sought at this time.
2.2). Seek professional help:
Contact the manufacturer or professional maintenance organization of the LED screen and provide evidence such as detailed fault description, as well as on-site photos and videos so that they can better understand the problem and provide solutions.
Before waiting for professional maintenance personnel to arrive, you can try to disconnect the power supply to avoid further damage.
2.3). Avoid self-disassembly:
Do not disassemble the LED screen or try to repair it yourself without professional training to avoid causing greater damage or safety hazards.
Respect the opinions and suggestions of professionals and cooperate with them in maintenance work.
3). Data backup
3.1). Prevent system crashes:
In high-temperature environments, the control system of the LED screen may crash due to overheating, resulting in data loss or unrecoverable. Therefore, important data should be backed up in advance before high temperature weather may occur.
3.2). Regular backup:
It is recommended to regularly back up the data in the LED screen, especially those data that are irreplaceable or difficult to recover, such as configuration files, playlists, user information, etc.
Develop a backup plan to clarify the backup time, backup method, and backup storage location.
3.3). Use reliable storage media:
Choose reliable storage media for backup, such as external hard drives, cloud storage, etc.
Ensure the security and accessibility of backup data and regularly test the recovery ability of backup data.
7.Choose LED screen products suitable for high-temperature environments
In high-temperature environments, choosing suitable products is crucial to ensure the normal operation of LED screens. Here are some detailed suggestions for choosing LED screen products suitable for high-temperature environments:
1). High-temperature resistant materials
1.1). Features and advantages:
LED screens made of high temperature-resistant materials can work stably at higher temperatures, reducing the risk of performance degradation and damage caused by overheating.
These materials usually have better thermal stability and weather resistance and can resist erosion from harsh environmental factors such as high temperature, humidity, and ultraviolet rays.
1.2). Market selection:
There are currently a variety of high-temperature resistant LED screen products available on the market. They usually use special heat dissipation materials and structural designs, such as metal substrates and ceramic substrates with high thermal conductivity, to improve their high-temperature resistance.
When choosing, you can pay attention to the product’s temperature resistance range, heat dissipation performance, service life, and other parameters to ensure that it meets actual use needs.
1.3). Scénarios d'application :
High-temperature-resistant LED screen products are suitable for high-temperature environments such as outdoor advertising, stades, stage performances, and industrial control.
2). Protection level considerations
2.1). IP level definition:
The IP level is a standard for evaluating the dust and water resistance of electronic equipment formulated by the International Electrotechnical Commission (IEC).
The first number indicates the dust resistance level, ranging from 0 to 6, and the larger the number, the stronger the dust resistance.
The second number indicates the waterproof level, ranging from 0 to 8, and the larger the number, the stronger the waterproof ability.
2.2). Impact on high temperature and humid environment:
In a hot and humid environment, the LED screen is easily corroded by dust and water vapour, resulting in performance degradation or damage.
Therefore, choosing an LED screen product with a higher IP rating can effectively prevent dust and water vapour from entering the interior of the device and protect its normal operation.
For applications outdoors or in hot and humid environments, it is recommended to choose an IP65 or higher LED screen product to ensure that it has good dust and water resistance.
2.3). Selection suggestions:
When choosing an LED screen product, you should carefully check its IP rating logo to ensure that it meets the dust and water resistance requirements of the actual application environment.
At the same time, you can also pay attention to other product performance parameters, such as brightness, contrast, fréquence de rafraîchissement, etc., to ensure that it meets the requirements of the display effect.
8. Conclusion
After talking about this, I believe everyone has a general understanding of the impact of high temperature on LED screens. High temperature is indeed a headache, but as long as we master the correct coping methods, we don’t have to be afraid of it anymore.
Enfin, si vous souhaitez en savoir plus sur les écrans d'affichage LED, veuillez nous contacter.
